///\todo upgrade

//////////////////////////////////////////////////////////////////////////////////
//                                                                              //
//  This file is part of the buola project (https://code.google.com/p/buola/).  //
//                                                                              //
//  Copyright(c) 2007-2012 Xavi Gratal                                          //
//  gratal AT gmail DOT com                                                     //
//                                                                              //
//  Buola is free software: you can redistribute it and/or modify               //
//  it under the terms of the GNU General Public License as published by        //
//  the Free Software Foundation, either version 3 of the License, or           //
//  (at your option) any later version.                                         //
//                                                                              //
//  Buola is distributed in the hope that it will be useful,                    //
//  but WITHOUT ANY WARRANTY; without even the implied warranty of              //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               //
//  GNU General Public License for more details.                                //
//                                                                              //
//  You should have received a copy of the GNU General Public License           //
//  along with buola.  If not, see <http://www.gnu.org/licenses/>.              //
//                                                                              //
//////////////////////////////////////////////////////////////////////////////////

#ifndef _BUOLA_IMAGE_CPATTERN_H_
#define _BUOLA_IMAGE_CPATTERN_H_

#include <buola/image/clineargradient.h>
#include <buola/image/cradialgradient.h>
#include <buola/image/ccolor.h>

namespace buola { namespace img {

class CPattern
{
public:
    enum EType
    {
        NONE,
        SOLID,
        LINEAR_GRADIENT,
        RADIAL_GRADIENT,
        SURFACE
    };
    
    CPattern()
        :   mType(NONE)
    {}

    ~CPattern()
    {
        Destroy();
    }

private:
    void Destroy()
    {
        switch(mType)
        {
            case SOLID:
                mData.mColor.~CColor();
                break;
            case LINEAR_GRADIENT:
                mData.mLinearGradient.~CLinearGradient();
                break;
            case RADIAL_GRADIENT:
                mData.mRadialGradient.~CRadialGradient();
                break;
            case SURFACE:
            case NONE:
                break;
        }
    }

public:
    void SetSolid(const CColor &pColor)
    {
        if(mType!=SOLID)
        {
            Destroy();
            new(&mData.mColor) CColor(pColor);
            mType=SOLID;
        }
        else
        {
            mData.mColor=pColor;
        }        
    }
    
    void SetLinearGradient(const CLinearGradient &pGradient)
    {
        if(mType!=LINEAR_GRADIENT)
        {
            Destroy();
            new(&mData.mLinearGradient) CLinearGradient(pGradient);
            mType=LINEAR_GRADIENT;
        }
        else
        {
            mData.mLinearGradient=pGradient;
        }
    }

    void SetRadialGradient(const CRadialGradient &pGradient)
    {
        if(mType!=RADIAL_GRADIENT)
        {
            Destroy();
            new(&mData.mRadialGradient) CRadialGradient(pGradient);
            mType=RADIAL_GRADIENT;
        }
        else
        {
            mData.mRadialGradient=pGradient;
        }
    }

    EType Type() const                              {   return mType;                   }

    const CColor &Color() const                     {   return mData.mColor;            }
    const CLinearGradient &LinearGradient() const   {   return mData.mLinearGradient;   }
    const CRadialGradient &RadialGradient() const   {   return mData.mRadialGradient;   }

private:
    EType mType;
    
    union SUnion
    {
        SUnion() {};
        ~SUnion() {};
        
        CColor mColor;
        CLinearGradient mLinearGradient;
        CRadialGradient mRadialGradient;
    } mData;
};

/*namespace img*/ } /*namespace buola*/ }

#endif
